First large volume characterization of the QIE10/11 custom front-end integrated circuits

Hare, D.; Baumbaugh, A.; Monte, L. Dal; Freeman, J.; Hirschauer, J.; Hughes, E.; Roy, T.; Whitbeck, A.; Yumiceva, F.; Zimmerman, T.

doi:10.1088/1748-0221/11/02/c02052

Cited by 4 publications

(6 citation statements)

References 2 publications

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“…The optical decoder unit (ODU) maps the incoming fibers from the scintillators to the photodetectors. These signals are digitized by the QIE chips (QIE8, QIE10, and QIE11) [56][57][58][59] in the readout modules (RMs), which provide both energy information via an analog-to-digital converter (ADC) and, for the QIE10 and QIE11 chips, rising-edge timing information via a time-to-digital converter (TDC). The clock, control, and monitoring (CCM) module provides the LHC clock, synchronous fast commands, slow control, and monitoring for the detector frontend electronics.…”

Section: Clear Fibersmentioning

confidence: 99%

Development of the CMS detector for the CERN LHC Run 3

Hayrapetyan,

Tumasyan,

Adam

et al. 2024

J. Inst.

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Since the initial data taking of the CERN LHC, the CMS experiment has undergone substantial upgrades and improvements. This paper discusses the CMS detector as it is configured for the third data-taking period of the CERN LHC, Run 3, which started in 2022. The entire silicon pixel tracking detector was replaced. A new powering system for the superconducting solenoid was installed. The electronics of the hadron calorimeter was upgraded. All the muon electronic systems were upgraded, and new muon detector stations were added, including a gas electron multiplier detector. The precision proton spectrometer was upgraded. The dedicated luminosity detectors and the beam loss monitor were refurbished. Substantial improvements to the trigger, data acquisition, software, and computing systems were also implemented, including a new hybrid CPU/GPU farm for the high-level trigger.

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Section: Clear Fibersmentioning

confidence: 99%

Development of the CMS detector for the CERN LHC Run 3

Hayrapetyan,

Tumasyan,

Adam

et al. 2024

J. Inst.

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“…[10]. The pulse of current generated by the SiPM is integrated using Charge-Integrator-and-Encoder (QIE) chips [11][12][13][14], with the digitized signals collected by a MicroSemi IGLOO2 FPGA and transmitted to the back-end electronics via an optical link through a versatile-link transmitter (VTTx) [15]. The VTTx connects each front-end (FE) module to an HCAL 𝜇TCA Trigger and Readout (𝜇HTR) module.…”

Section: Wallmentioning

confidence: 99%

The effect of radiation damage on the light yield and uniformity of candidate plastic scintillator tiles for the CMS hadron calorimeter upgrade

Collaboration¹

2022

Preprint

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The effect of radiation damage on the light yield and uniformity of candidate plastic scintillator tiles for the CMS hadron calorimeter upgrade The CMS HCAL CollaborationA : A study is presented of the effects of radiation damage on various plastic scintillating tiles considered for the LHC Run 3 upgrade of the hadron calorimeter of the CMS detector. Measurements are made both before and after irradiation in the CMS collision hall to a dose of 44 kGy. Results are given for their energy spectrum, efficiency as a function of position, and light yield; tiles of different shapes were studied. All tiles saw a light reduction of ≈ 50%. The tiles in the shape currently used in the CMS detector did not see increased non-uniformity of light collection, while a significant disuniformity was observed in tiles in an alternative shape.

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“…For each time sample, the raw ADC values read out from the QIE11 front-end cards are converted into corresponding charge values using the conversion tables specific to the QIE11 chips [3]. Of the nine available consecutive time samples, four are used to form the 100-ns integration window.…”

Section: Calibration Of the Sipmsmentioning

confidence: 99%

“…Here we describe the instrumentation details and the operational experiences related to the sourcing test. The Phase I upgrade of HE consists of new photodetectors (Silicon photomultipliers -SiPMs) and upgraded front-end electronics (QIE11 -Charge Integration and Encoding [3]). The upgrade will allow the elimination of the high amplitude noise and drifting response of the HPDs, at the same time enabling the mitigation of the radiation damage of the scintillators and the wavelength shifting fibers with the larger spectral acceptance of the SiPMs.…”

mentioning

confidence: 99%

Radioactive source calibration test of the CMS Hadron Endcap Calorimeter test wedge with Phase I upgrade electronics

Chatrchyan¹,

Sirunyan²,

Tumasyan³

et al. 2017

J. Inst.

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The Compact Muon Solenoid (CMS) is a general-purpose detector designed to run at the highest luminosity provided by the CERN Large Hadron Collider (LHC) [1]. The CMS calorimeters were designed to cleanly detect the diverse signatures of new physics through the measurement of jets and missing transverse energy. The CMS experiment has a 4 T superconducting solenoidal magnet of length 13 m and inner diameter 5.9 m. The barrel and end-cap calorimeters are located inside this magnet.The hadron endcap calorimeter (HE) is a sampling calorimeter covering the pseudorapidity range 1.3 < |η| < 3. The active medium of the HE is scintillator tiles placed in trays that are inserted between the absorber plates of cartridge brass (70 % Cu and 30 % Zn). The trapezoidal-shaped scintillators are composed of 3.7 mm thick Kuraray SCSN81 or 9.0 mm thick Bicron BC408 for the layer closest to the interaction point, Layer 0. The scintillator tiles are painted white along the narrow edges and placed into a frame to form a tray. This tray, which reads a 10 • φ sector of the detector, is called a megatile. Two megatiles form a wedge of the calorimeter. The total number of trays for both HE calorimeters is 1368 in 36 wedges.The scintillation light is collected by 0.94 mm diameter wavelength shifting (WLS) fibers, inserted in machined groves near the periphery of the scintillator tiles. The ends of the WLS fibers are machined with a diamond fly cutter, and one end is aluminized by sputtering to increase the light collection. The other end is spliced to a 0.94 mm diameter clear fiber, which is glued in a custom made optical connector. The readout boxes (RBXs), which contain the photodetectors and front-end electronics, are located at the back of the calorimeter, near the edges. Multipixel hybrid photodiodes (HPDs) are used as photodetectors. Figure 1 shows a picture of the HE (left) and a sketch of the longitudinal and transverse segmentation (right).-1 - JINST 12 P12034A radioactive source calibration system, using a 60 Co source, exists in HE. In this system, the radioactive source on the tip of a wire moves in stainless steel tubes embedded in the megatiles. The system allows driving of the radioactive source to every single tile in HE. The radioactive source is not stored on the detector during operations. Instead, the radioactive source calibration is performed whenever necessary and possible. Identical calibration system exists for the HE test wedge, which will be described in detail below.Further information about HE can be found in reference [2].

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First large volume characterization of the QIE10/11 custom front-end integrated circuits

Cited by 4 publications

References 2 publications

Development of the CMS detector for the CERN LHC Run 3

Development of the CMS detector for the CERN LHC Run 3

The effect of radiation damage on the light yield and uniformity of candidate plastic scintillator tiles for the CMS hadron calorimeter upgrade

Radioactive source calibration test of the CMS Hadron Endcap Calorimeter test wedge with Phase I upgrade electronics

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